726/8=720/8+6/8≈90+1=91
解:设题中的等式为726/8=926m/7=801n/6=z 则:z=726/8=363/4 所以:由926m/7=363/4,求得m=2541/3704 由801n/6=363/4求得n=121/178 所以:726除以8=(2541/3704)*926除以7=(121/178)*801除以6=363/4
726÷8≈90估算时商应该是约为90,可以根据乘除互逆运算的法则进行估算,8x9=72,所以,726÷8≈90
解:726除以90=726÷90=(720+6)÷90=720÷90+6÷90 ≈720÷90=8726除以90约等于8
估算就是约等于100.即796约等于800,再口算800除以8
571÷8 ≈560÷8=70
109
781=800-19781÷8=(800-19)÷8=800÷8-19÷8=100-(16+3)÷8=100-2-3/8=98-3/8 ≈98
726÷80≈9.08答:726÷80约等于9.08.
解:731除以8等于( 91.375 ) ∵已知需求出731除以8等于多少 X ÷ Y = X / Y = Z ∴731除以8 = 731 ÷ 8 = 731 * 1/8 = 731/8 = 91.375 答:731除以8等于91.375